NDI Carrara 1: Strontium, Carbon, and Oxygen Isotope Data from a Stratigraphic Drill Hole

1751 m stratigraphic drill hole NDI Carrara 1, completed in 2020, intersected Paleozoic and Proterozoic rocks in the Carrara Sub-basin. Geoscience Australia presents new high-resolution strontium (87Sr/86Sr), carbon (δ13C), and oxygen (δ18O) isotope data from carbonate samples to understand paleo-depositional environments and chemostratigraphy. The majority of samples show significant alteration, requiring caution for assessing primary depositional conditions.

Use Cases

• Reconstructing paleo-depositional environments based on strontium, carbon, and oxygen isotope ratios.
• Analyzing local and global chemostratigraphy trends recorded in the Carrara Sub-basin.
• Investigating the resource potential of the basin by correlating isotope data with encountered hydrocarbon shows.
• Assessing basin connectivity to the global Cambrian ocean using 87Sr/86Sr ratios from Georgina Basin samples.

Strengths

• Data originates from a 1751 m deep stratigraphic drill hole, providing a continuous subsurface record.
• High-resolution isotope data for three distinct elements (Sr, C, O) from specific geological formations.
• Analysis was conducted by Geoscience Australia, a national geological survey, as part of a formal exploration program.

Limitations

• The description notes the majority of samples show significant alteration, limiting their use for assessing primary depositional conditions.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and sample size are unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia under the Exploring for the Future program, in collaboration with MinEx CRC and the Northern Territory Geological Survey.

Collection Method

Samples were collected from the NDI Carrara 1 drill hole and analyzed in a comprehensive analytical program.

Time Range

Samples are from the Paleozoic Georgina Basin and the Proterozoic Lawn Hill Formation (~1600 Ma).

Freshness

Last updated 2026-04-18 18:19:31.936585; freshness should be verified.

Geography

Carrara Sub-basin, South Nicholson region, Australia.